php jpgraph教程 1

首先包含进来jpgraph的类库：


include ("../jpgraph.php");


include("../jpgraph_bar.php");


include ("../jpgraph_line.php");


设置显示的数据数组；


调用类库


//设置图像的大小


$graph = new Graph(400,200,"auto");


$graph->SetScale("textlin");


//设置图形的边距


$graph->img->SetMargin(40,180,40,40);     


//设置图形的背景图片，填充方式有：BGIMG_FILLPLOT, BGIMG_FILLFRAME, BGIMG_COPY


$graph->SetBackgroundImage("abc.jpg",BGIMG_FILLPLOT);


$graph->img->SetAngle(45);  //设置图形在图像中的角度


//设置背景图片的对比度，must be between -1


$graph->AdjBackgroundImage(0,0);


//设置投影；


//$graph->SetShadow();


//设置标题


$graph->title->Set("test image");


//设置标题字体样式


$graph->title->SetFont(FF_FONT1,FS_BOLD);


//设置标题的边距


$graph->title->SetMargin(3);


//设置图列的位置


$graph->legend->Pos(0.05,0.5,"right","center");


//设置图列的投影，颜色


$graph->legend->SetShadow('[email protected]');


$graph->legend->SetFillColor('[email protected]');


//设置x轴的标记


$graph->xaxis->SetTickLabels($label_x);


//设置X轴的显示值的角度;


$graph->xaxis->SetLabelAngle(30);


//设置x轴标题和字体颜色


$graph->xaxis->title->Set('Year 2006');


$graph->xaxis->title->SetFont(FF_FONT1,FS_BOLD);


$graph->xaxis->title->SetColor('white');


//设置x轴的字体和颜色


$graph->xaxis->SetFont(FF_FONT1,FS_BOLD);


$graph->xaxis->SetColor('yellow');


//设置y轴的字体和颜色


$graph->yaxis->SetFont(FF_FONT1,FS_BOLD);


$graph->yaxis->SetColor('yellow');


//设置是否显示格子。默认为显示；


//$graph->ygrid->Show(false);


//设置格子的颜色和粗细。值越小，格子越粗。


$graph->ygrid->SetColor('[email protected]');


//设置y轴更优美一些


$graph->yaxis->scale->SetGrace(20);